The quantity (x + y) is a factor of

A.
x^{2} + y^{2} 
B.
x^{3} – y^{3} 
C.
2x^{2} – 3xy + y^{2} – x + 1 
D.
2x^{3} + 2x^{2}y – xy + 3x – y^{2} + 3y 
E.
x^{5} – y^{5}
Correct Answer: Option D
Explanation
(x + y) is a factor 2x^{3} + 2x^{2}y – xy + 3x – y^2